Agglutinant for veneer



Patented June 26, 1923.

PATENT OFFICE.

PAUL sonnor, or BAD soonnn, GERMANY.

AGGLUTINANT FOR VENEER.

No Drawing.

Application filed August 13, 1921.

Serial No. 492,143.

(GRANTED UNDER THE PROVISIONS OF THE ACT OF MARCH 3, 1921, 41 STAT. L, 1313.)

To all whom it may concern:

Be it known that I, PAUL SoHRoT, a citizen of the German Republic, residing at Bad Sooden, Germany, have invented certain 5 new and useful Improvements in an Agglutinant for Veneer (for which I have filed applications for patent in Germany on the 9 September, 1919; Holland, 29 May, 1920;

Austria, 28 May, 1920; Czechoslovakia, 1 1 June, 1920; Hungary, 20 June, 1920; Poland,

9 July, 1920; and Belgium, 3 August, 1920),

of which the following is a specification.

In the manufacturing of pieces of furniture the inconvenience makes itself felt that 1 the facility of the glue used for fixing the veneer upon the wood to permeate the veneer increases in the same proportion as the porosity of the veneer.

It has already been proposed to admix whiting with the glue in order to avoid this inconvenience, but as a large quantity of whiting had to be added the binding power of the glue was unfavorably influenced.

According to this invention lenzin and ocher are added to the glue. Light spar, called lenzin, is a substance which according to the analysis of Dr. Fresenius of Frankfort-on-the-Main is composed of 21.36% of water, 78.43% of calcium sulphate, 0.21%

of alumina.

It therefore differs by itscomposition from the artificial product of the same name used in the manufacturing of paper which consists exclusively of calcined finely ground gypsum. It is found in natural state for example in Kornberg near Bad Sooden. Ocher is admixed with this substance in order to give to the same a colour which is similar to that of the veneer.

Ema/mp la.

10 kilograms of lenzin, 15 grams of ocher and 3 liters of water are admixed with 5 kilograms of leather glue which has been soaked in water for 14 hours.

This agglutinant permits to use hot pressure bodies for pressing the veneer upon its support without soaking through of the glue so that the greasing of the outer surface of the veneer is no longer necessary. The ag glutinant is further free from sand so that the tools used for the subsequent working of the woods are not damaged.

The binding of the veneer surface is completed in 3 to 3%; hours instead of taking 45 hours as is the case at present.

1. Agglutinant for veneer consisting of a mixture of lenzin, ocher and leather glue.

2. Process for the production of an agglutinant for veneer consisting in soaking leather glue for some time, e. g. let hours, in water, in boiling the same and in adding to this glue lenzin, ocher and Water. 65

3. Process for the production of an agglutinant for veneer consisting in admixing with 5 kilograms of leather glue which has been soaked in water for 14 hours, 10 kilograms of lenzin, 5 grams of ocher and 3 liters of water.

In testimony whereof I afiix my signature in presence of two Witnesses.

PAUL SCI-IROT.

Witnesses W. WIRTH, F. RnNoY. 

